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Circuit Module Physical Layouts

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SLUUBU2B – March 2018 – Revised August 2018

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Copyright © 2018, Texas Instruments Incorporated

bq77915 3-5S Low Power Protector Evaluation Module

Figure 7. Top Assembly

Figure 8. Top Layer

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Содержание bq77915EVM-014

Страница 1: ...nder different charge and discharge conditions Balancing of unmatched cells can also be performed on the module Contents 1 Features 3 1 1 Kit Contents 3 1 2 Ordering Information 3 1 3 Documentation 3 1 4 bq77915 Circuit Module Performance Specification Summary 3 2 bq77915EVM Quick Start Guide 3 2 1 Before You Begin 3 2 2 Items Needed for EVM Quick Start Evaluation 4 2 3 EVM Connections 4 2 4 Quick...

Страница 2: ...er Protector Evaluation Module 6 Top Silk Screen 11 7 Top Assembly 12 8 Top Layer 12 9 Internal Layer 1 13 10 Internal Layer 2 13 11 Bottom Layer 14 12 bq77915EVM Schematic 15 13 bq77915EVM Cell Balance Indicator Schematic 16 List of Tables 1 Performance Specification Summary 3 2 Module Modifications for Stacking 8 3 bq77915EVM Bill of Materials 17 ...

Страница 3: ... 1 4 bq77915 Circuit Module Performance Specification Summary This section summarizes the performance specifications of the bq77915EVM Table 1 Performance Specification Summary Specification Minimum Typical Maximum Unit Input voltage BATT to BATT 3 18 22 V Output voltage PACK to PACK 0 18 22 V Charge and discharge current 0 2 5 4 A Cell Balancing Current 50 mA Operating temperature 20 25 30 o C 2 ...

Страница 4: ...damage to your equipment CAUTION The circuit module is not a finished product or electrical appliance It must be used by qualified personnel with additional equipment for evaluation only Do not leave EVM powered when unattended 2 2 Items Needed for EVM Quick Start Evaluation A bq77915 circuit module An adjustable DC power supply that can provide 10 V to 22 V and 1 A minimum a voltage range bipolar...

Страница 5: ...nd Hibernate Mode for a description of OCDP options 2 4 Quick Start Sequence These steps describe a simple demonstration or check of the operation of the bq77915EVM in a 5S configuration with a typical 18 V stack voltage 1 Connect five 200 Ω resistors between the cell terminals of J3 2 Confirm that shunts are in place on J3 shorting pins 1 to 2 and 3 to 4 3 Confirm a shunt is in place on the J4 pi...

Страница 6: ... A battery voltage in range must be applied to the BATT side of the EVM for operation The instrument on the PACK side can be used as a load if it is set to a lower voltage than the battery side or as a charger if set to a higher voltage Additional equipment can be used to adjust the voltage across the individual input resistors to simulate different cell voltages Figure 2 Bipolar Operation Operati...

Страница 7: ...e any jumper to monitor all cell inputs Figure 3 Operation With Reduced Cell Count 3 3 Connecting to Cells TI recommends operating the bq77915 EVM with power supplies to become familiar with the operation and features of the module and bq77915 before connecting cells The bq77915 EVM may be connected to cells so that the cells can provide the power for the bq77915 a concept is shown in Figure 4 The...

Страница 8: ...fore connecting the modules the bottom and top modules must have component additions and changes shown in Table 2 to enable the stacking inputs and support the UV load removal recovery detection for the upper device Next connect the upper board J7 to the lower board J1 Also connect the upper board J5 pins 1 and 3 to the lower board J4 pins 1 and 3 respectively The top board must also have a wire c...

Страница 9: ...module unless properly modified and connected Confirm operation of your modified evaluation setup Once modified the bottom module will not enable FETs when disconnected from the top module The stacked modules hibernate when the shunt is removed from the top module J4 Installing the shunt on the top module J4 pins 2 to 3 exits hibernate mode Cell balancing for the stacked modules is enabled by inst...

Страница 10: ...t Features This section contains information on other EVM features 4 1 Alternate FETs The EVM has TO 220 footprints for use as test points or power FETs as options for evaluation 4 2 Single Ended Filter Capacitors C2 C4 C5 and C7 are patterns for single ended filters on the battery input terminals if desired With the internal cell balancing differential capacitors may be preferred they distribute ...

Страница 11: ...aluation Module 5 Circuit Module Physical Layouts This section contains the printed circuit board PCB layout assembly drawings and schematic for the bq77915 circuit module 5 1 Board Layout This section shows the PCB layers and assembly drawing for the bq77915 module see Figure 6 through Figure 11 The board is a single sided assembly no components are located on the bottom Figure 6 Top Silk Screen ...

Страница 12: ...youts www ti com 12 SLUUBU2B March 2018 Revised August 2018 Submit Documentation Feedback Copyright 2018 Texas Instruments Incorporated bq77915 3 5S Low Power Protector Evaluation Module Figure 7 Top Assembly Figure 8 Top Layer ...

Страница 13: ...al Layouts 13 SLUUBU2B March 2018 Revised August 2018 Submit Documentation Feedback Copyright 2018 Texas Instruments Incorporated bq77915 3 5S Low Power Protector Evaluation Module Figure 9 Internal Layer 1 Figure 10 Internal Layer 2 ...

Страница 14: ...ysical Layouts www ti com 14 SLUUBU2B March 2018 Revised August 2018 Submit Documentation Feedback Copyright 2018 Texas Instruments Incorporated bq77915 3 5S Low Power Protector Evaluation Module Figure 11 Bottom Layer ...

Страница 15: ... R24 1 0M R28 100V D2 1uF C3 1uF C6 1uF C8 1uF C9 1uF C10 1uF C11 1uF C12 10 0k R1 10 0k R18 DNP 10 0k R12 DNP 1uF C7 DNP GND 1uF C5 DNP GND 1uF C4 DNP GND 1uF C2 DNP GND 43 R5 43 R9 43 R10 43 R11 43 R14 43 R16 BQ7791500PWR DSG 12 CCFG 20 CHG 13 LD 14 TS 18 VTB 19 CTRC 23 AVDD 2 VDD 1 VC5 3 VC4 4 VC3 5 VC2 6 VC1 7 VSS 9 SRP 10 SRN 11 OCDP 17 LPWR 15 VC0 8 PRES 22 CBI 16 CBO 21 CTRD 24 U1 1 2 3 4 5...

Страница 16: ...3 C4 C5 VC1 VC2 VC3 VC4 VC5 Circuit Module Physical Layouts www ti com 16 SLUUBU2B March 2018 Revised August 2018 Submit Documentation Feedback Copyright 2018 Texas Instruments Incorporated bq77915 3 5S Low Power Protector Evaluation Module Figure 13 bq77915EVM Cell Balance Indicator Schematic ...

Страница 17: ...cro Commercial Co D5 D6 D7 D8 D9 5 Red LED Red SMD 3x1 5mm BR1101W TR Stanley electric Co H9 H10 H11 H12 4 Bumpon Hemisphere 0 44 X 0 20 Clear Transparent Bumpon SJ 5303 CLEAR 3M J2 1 Terminal Block 3 5mm Pitch 6x1 TH 20 5x8 2x6 5mm ED555 6DS On Shore Technology J3 1 Header 100mil 4x1 Tin TH Header 4x1 100mil TH PEC04SAAN Sullins Connector Solutions J4 J5 J8 3 Header 100mil 3x1 Tin TH Header 3 PIN...

Страница 18: ...ics Inc R34 R35 R36 R37 R38 5 1 00k RES 1 00k 1 0 1W 0603 0603 CRCW06031K00FKEA RT1 1 10 0kΩ Thermistor NTC 10 0kΩ 1 Disc 5 8 4 mm Disc 5 8 4 mm 103AT 2 SEMITEC Corporation TP1 1 Test Point Miniature White TH White Miniature Testpoint 5002 Keystone TP2 TP3 TP4 TP7 4 Test Point Multipurpose White TH White Multipurpose Testpoint 5012 Keystone TP5 TP6 2 Test Point Multipurpose Black TH Black Multipur...

Страница 19: ... August 2018 Submit Documentation Feedback Copyright 2018 Texas Instruments Incorporated bq77915 3 5S Low Power Protector Evaluation Module 7 Related Documentation from Texas Instruments Texas Instruments bq77915 3 5S Low Power Protector with Cell Balancing and Hibernate Mode Data Sheet ...

Страница 20: ...mbers for previous revisions may differ from page numbers in the current version Changes from A Revision August 2018 to B Revision Page Added sentence to first paragraph in Section 3 4 8 Changed J2 to J4 in Table 2 8 Changed J2 to J4 in last paragraph in Section 3 4 9 Changes from Original March 2018 to A Revision Page Updated Cell Balance Indicators section 10 Updated Top Silkscreen image 11 ...

Страница 21: ...y set forth above or credit User s account for such EVM TI s liability under this warranty shall be limited to EVMs that are returned during the warranty period to the address designated by TI and that are determined by TI not to conform to such warranty If TI elects to repair or replace such EVM TI shall have a reasonable time to repair such EVM or provide replacements Repaired EVMs shall be warr...

Страница 22: ...the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated Antenna types not included in this list having a gain greater than the maximum gain indicated for that type are strictly prohibited for use with this device Concernant les EVMs avec antennes détachables Conformément à la réglementation d Industrie Canada le présent émetteur radio peut fo...

Страница 23: ...ed loads Any loads applied outside of the specified output range may also result in unintended and or inaccurate operation and or possible permanent damage to the EVM and or interface electronics Please consult the EVM user guide prior to connecting any load to the EVM output If there is uncertainty as to the load specification please contact a TI field representative During normal operation even ...

Страница 24: ...COST OF REMOVAL OR REINSTALLATION ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES RETESTING OUTSIDE COMPUTER TIME LABOR COSTS LOSS OF GOODWILL LOSS OF PROFITS LOSS OF SAVINGS LOSS OF USE LOSS OF DATA OR BUSINESS INTERRUPTION NO CLAIM SUIT OR ACTION SHALL BE BROUGHT AGAINST TI MORE THAN TWELVE 12 MONTHS AFTER THE EVENT THAT GAVE RISE TO THE CAUSE OF ACTION HAS OCCURRED 8 2 Specif...

Страница 25: ... TI Resource NO OTHER LICENSE EXPRESS OR IMPLIED BY ESTOPPEL OR OTHERWISE TO ANY OTHER TI INTELLECTUAL PROPERTY RIGHT AND NO LICENSE TO ANY TECHNOLOGY OR INTELLECTUAL PROPERTY RIGHT OF TI OR ANY THIRD PARTY IS GRANTED HEREIN including but not limited to any patent right copyright mask work right or other intellectual property right relating to any combination machine or process in which TI product...

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